History of the Peloponnesian War

Which dominion we obtained not by violence, but because the confederates, when yourselves would not stay out the relics of the war against the barbarian, came in and entreated us to take the command of their own accord.

So that at first we were forced to advance our dominion to what it is out of the nature of the thing itself, as chiefly for fear, next for honour, and lastly for profit.

For when we had the envy of many and had reconquered some that had already revolted, and seeing you were no more our friends as you had been but suspected and quarrelled us, we held it no longer a safe course laying by our power to put ourselves into your danger. For the revolts from us would all have been made to you.

Now it is no fault for men in danger to order their affairs to the best.

"For you also, men of Lacedaemon, have command over the cities of Peloponnesus and order them to your best advantage. And had you, when the time was, by staying it out, been envied in your command, as we know well, you would have been no less heavy to the confederates than we, you must have been constrained to rule imperiously or to have fallen into danger.